Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
In the battle also he fought with the courage of a lion; two centurions fell by his hand; wounded and on his knees he still wielded his spear against the advancing foes. Thus the great robber-captain and with him the best of his comrades died the death of free men and of honourable soldiers (683). After the dearly-bought victory the troops who had achieved it, and those of Pompeius that had meanwhile after conquering the Sertorians arrived from Spain, instituted throughout Apulia and Lucania a manhunt, such as there had never been before, to crush out the last sparks of the mighty conflagration.
Although in the southern districts, where for instance the little town of Tempsa was seized in 683 by a gang of robbers, and in Etruria, which was severely affected by Sulla's evictions, there was by no means as yet a real public tranquillity, peace was officially considered as re-established in Italy. At least the disgracefully lost eagles were recovered-- after the victory over the Celts alone five of them were brought in; and along the road from Capua to Rome the six thousand crosses bearing captured slaves testified to the re-establishment of order, and to the renewed victory of acknowledged law over its living property that had rebelled.
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Reference address : https://www.ellopos.net/elpenor/rome/5-02-rule-sullan-restoration.asp?pg=81